EU PROJECT RESOLUTION - Reconfigurable Systems for Mobile Local Communication and Positioning

A method for preparing a core material containment system which prevents or controls leaching of the core material from the containment system, said method comprising the steps of: (1) providing a shell material having a softening temperature above about 70 DEG F.; (2) heating said shell material to a temperature at or above the softening temperature of said shell material; (3) adding an oil to the molten shell material, said oil being compatible with said shell material but not a solvent for the shell material in a solid state; (4) uniformly dispersing a core material in the molten, oil-containing shell material; (5) subdividing said molten, oil-containing shell material having said core material dispersed therein into individual droplets of a predetermined size; (6) cooling the molten, oil-containing shell material having said core material dispersed therein to a temperature below its softening temperature to obtain a plurality of encapsulated or coated particles of said core material; and (7) recovering said particles of encapsulated or coated core material; and a core material containment system prepared by such method are described.